Steven Smith drives on the off side, Australia v India, 1st Test, Adelaide, 1st day, December 9, 2014© Getty Images
Michael Clarke retires hurt with back trouble, Australia v India, 1st Test, Adelaide, 1st day, December 9, 2014© Getty Images
Michael Clarke sinks to his knees with back pain, Australia v India, 1st Test, Adelaide, 1st day, December 9, 2014© Getty Images